Robot vacuum cleaner



1. Robot vacuum cleaner

1.1 - Top right perspective view;

1.2 - Front elevational view;

1.3 - Rear elevational view;

1.4 - Left side elevational view;

1.5 - Right side elevational view;

1.6 - Top plan view;

1.7 - Bottom plan view.

The broken lines depict unclaimed environmental subject matter and form no part of the claim. 

CLAIM The ornamental design for a robot vacuum cleaner, as shown and described. 